Not really sure if many people use a PS4 but when I downloaded Titanfall 2 it gave me 48 hours of free PSN. I've already used my free month before so I think they give it to you for the weekend free Titanfall 2 demo out right now.
Might be useful for anyone wanted to have a go at PSN again, or to snap up all those free themes or games in case they use PSN again sometime.